Lock



y 22, 1934' J. HOLTZMAN 1,959,361

- LOCK Fi-led Oct. 20, 1931 4 Sheets-Sheet l Mambo/u Y HN H LTzmu 351fll'tozneagj May 22, 1934. H T M N 1,959,361

LOCK

Filed Oct. 20, 1931 4 Sheets-Sheet 2 67 46 II II I All J me 'nm 6INVENTOR lfoau HoLTzMw ATTORNEY y 2, 1934. J. HOLTZMAN 1,959,361

7 LOCK Filed Ocp. 2Q, 1931 4 Sheets-Sheet 3 93 4 INVENTOR Juno H01. zmwBY ATTORNEY MayZ 3 i HOLTZ MAN 1,959,361

' LOCK Filed Oct. 20. 1931 4'Sheets-Sheet 4 mvzu-roR Joan Hon mm,

BY ATTORNEY Patented May 22, 1934 UNITED STATES LOCK John Holtzman, NewYork, N. Y.

Application October 20,

18 Claims.

This invention relates to new and useful improvements in looks.

The invention has for a main object the construction of locks which areof simple durable form, dependable in use and eflicient in operation,

and which can be manufactured and sold at a' reasonable cost.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of thisdisclosure:-

Fig. 1 is an elevational view of a lock constructed according to thisinvention.

Fig. 2 is a sectional view taken on the line 2-2 of Fig. 1 with the lockshown upon a door.

Fig. 3 is a bottom elevational view of the lock with the base plate ofthe casing removed.

Fig. 4 is an elevational view of the keeper.

Fig. 5 is an edge elevational view of Fig. 4.

Fig. 6 is a detailed view of the bolt of the lock.

Fig. '7 is an elevational view of a lock constructed according to amodification of the invention. a portion thereof being broken away toillustrate interior parts.

Fig. 8 is a sectional view of the lock shown in Fig. '7 with the boltsextended, taken on the line 8-8 of Fig. 9.

Fig. 9 is a sectional view of the lock taken 0 the line 9-9 of Fig. 8.

Fig. 10 is a fragmentary sectional view taken on the line 10-10 of Fig.'7.

Fig. 11 is a fragmentary sectional view taken on the line 11-11 of Fig.'7.

Fig. 12 is a perspective view of a member used in the lock.

Fig. 13 is a perspective view of a slide plate used in the lock.

Fig. 14 is a longitudinal view of a modified form of lock.

Fig. 15 is a bottom view of a lock constructed according to anotherembodiment of the invention.

Fig. 16 is a view similar to Fig. 15 but showing the bolts retracted.

Fig. 17 is a sectional view taken on the line 17-17 of Fig. 15.

Fig. 18 is a sectional view taken on the line 18-18 of Fig. 15.

Fig. 19 is a sectional view taken on the line 19-19 of Fi 15. V

In the form of the invention illustrated in Figs.

1931, Serial No. 569,921

1-6 inclusive, the lock consists of a casing 10 for attachment upon adoor 11 and adapted to extend over the door jamb 12, and having a bottomcover. plate 17 with openings 13 for receiving hooks 14 from a keeper 15attached upon the jamb. The top face of the casing is recessed asindicated by reference numeral 16 for ornamental purposes. The bottom ofthe casing is closed by said plate 17 which is removably held inposition by a screw 18 which passes through a boss 19 projecting fromthe interior of the casing. A bolt 20 is rotatively mounted upon theboss 19 and has a pair of members 21 capable of engaging and holding thehooks 14 in one position. The bolt may also turn to a different positionout of line with the openings 13. The hooks 14 have cam portions 22adapted to act against cam portions 23 upon the members 21 so that thelock may be snapped closed by the hooks of the keeper .acting againstthe bolt and causing it to turn temporarily.

The keeper 15 is shown constructed with an angular base 24 attached uponthe jamb by screws 25. A finger 26 projects from the bolt 20. A stop 2'7is mounted within the casing 10 sub-- stantially in the same line as thefinger 26. An arcuate member 28 is rotatavely mounted upon the casingand its ends respectively engage the stop 27 and the finger 26. Thisarcuate member is fixed upon a knob 29 which projects to the outer sideof the lock for allowing manual opening thereof.

The door 11 is provided with the conventional tumbler lock 30 which hasa flat stem 31 engageable through a corresponding opening in a rotativemember 32 located upon the back plate 17 of the casing of the lock. Themember 32 has an arcuate finger 33 acting against the finger 26 for thepurpose of pivoting the bolt 20 upon operation of the lock 30. The stem31 is free in the knob 29 so that the knob 29 may be selectively turnedto pivot the bolt 20. Resilient means serve to pivot the bolt 20 so asto normally hold it in its locked position. I This means comprises aspring 34 attached at one end upon the finger 26 and atthe other endupon a screw 35 mounted within the casing 10. A plurality of apertures36 are formed in the casing 10 for the purpose of attaching the'lockupon the door. A catch 3'? is provided for holding the lock in an openposition whenever desired. This catch comprises a depressible plungercapable of engagement in its depressed condition with an aperture 38formed in the bolt 20. Recesses 13 are formed within the top portion ofthe casing 10 for accommodating the ends of the hooks 14. A

feature of the construction of this look lies in the fact that the hooks14 do not extend through the front of the casing 10 so that they may beviewed.

In operation of the lock the spring 34 normally pivots the bolt 20 sothat the arcuate member 28 is arrested by the stop 27 and in thisposition the finger portions 21 of the bolt are in positions to beengaged by the hooks 14 of the keeper. When the door is closed the camportions 22v on the hooks of the keeper engage the cam portions 23 onthe bolt for the purpose of prying the bolt to its open position. Thebolt automatically snaps back under the action of the spring 34 to itsclosed position. The door may be opened from the inside by turning theknob 29 which causes the arcuate member 28 to act against sists of acasing 40 for attachment upon a door.

and having a closed end 41 formed with non circular openings '42. 'Akeeper 43 is attached upon the jamb 44 and has a closed end 45 in endcontacting relation with the end 41 and formed 7 with openings 46,preferably similar to the openings 42 and aligned therewith. The face ofthe casing is recessed as indicated by reference numeral 47. The casingis closed at the bottom by a plate 48 held in position at one end by aflange 49 and at the other end by'a screw 50. The keeper 43 has a flange51 disposed on one side of the jamb 44. Screws 52 and 58 serve to holdthe keeper in place.

A plate '54 is slidably mountedwithin the cas ing 40. Parallel lugs'55project from the inside of the casing 40 and serve to guide theplate 54in its sliding motion. A' means is provided for moving the plate 54 andcomprises a socket member-56' extending through a transverse elongatedaperture 83 in the plate 54 and rotatively mounted on a pin 56'eccentricallyriveted ona disc 57 carried by a knob 58, rotativelymounted through the casing 40. A means is provided for holding the plate54 in an extended or retracted position and comprises a spring 59attached upon the bottom of the plate 54 and extended through a slot orrecess 60 in one side of the stud 56. The spring 59 also functions tokeep the stud 56 from turning on its axis relative to the casing 40during extending and retraction of the plate 54.

Bolts '61 are rotatively mounted upon the bottom of'the plate '54. Therotative mounting is accomplished by -a pair of blocks 62 engagedonopposite sides of the neck portions 63 of the bolts and secured to theplate by screws'64. At the inner ends the necks'63 terminate in squareheads 65. A means is provided for holding the bolts in rotativepositions and comprises a fiat spring 66 attached on "the bottom ofthe-plate 54 and resting'against one of [the sides 'of the squared headsto hold the bolts in one rotative position when extended, or againstother sides to hold them in another rotative position when retracted,thus preventng accidental turning. The front ends of the bolts61 areslidable in the openings 46 and are formed with" head portions 6'?preferably of the same shape as theopenings 46. When the heads arelocated within the keeper and turned they assume positions so as toprohibit longitudinal retraction. A member 68 is pivotally supported atone end 69 by the screw 50.

The other end of this member is formed with an arcuate rack of teeth 70meshing with teeth '71 formed in the bolts 61 and extendingsubstantially the entire lengths of the bolts. The member 68 may bepivoted to turn the bolts one way or the other against the restrainingaction of the spring 66. A slot 72 is formed in the member 68 and has alongitudinal rear portion 73 connect ng with an inclined front portion74. A pintle pin '75 is riveted-and projected from the plate 54 andextends through the slot '72. Pegs '76 project from the bottom of themember 68 and ride upon the back cover 48 of the casing forming supportswhich allow the member 68 to travel in an arcuate path.

A socket member '77 is rotatively mounted in the back cover 48 of thecasing and is formed with a slot 78 for receiving a turning stem from atumbler lock. 'An arm 79 is fastened upon the socket '77 and carries apin 80 which engages within, a substantially semi-circular flange on thebottom of the socket member 56 so that the plate 54 can be'moved eitherby the knob 58 or by the stem of the tumbler lock. Screws 81 serve tohold the casing40 upon the door 82 which works in conjunction with thejamb 44. The opening in the plate 54 through which the member 56'extends is elongated transversely and indicated by reference numeral 83.This arrangement allows for the disc 57 to turn and merely move theplate 54 longitudinally. v 7

The operation of the lock may be traced by assuming it in the conditionillustrated in Fig. '7. This is the open position. The lock may beclosed by moving the. plate 54 forwards. This is possible by eitherturning the knob 58 or by operation of the stem from the tumbler lockwhich will turn the socket 77. As the plate 54 moves frontwards, thebolts 61 will be extended into the keeper 43. The plate 54 will soonreach a condition in which the stud '75 rides within the inclinedportion of the slot 72 in the pivoted member 68; This will cause themember 68 to move around the screw 50 as a pivot. The teeth '70, or" themember 68 being in mesh with the teeth of the bolts 61, then causethebolts 61. to rotate so that the head portions 67 of the bolts assume aposition relative to the openings 42 as indicated by the dotanddashlines in Fig. 16, that is. positions in which they cannot beretracted longitudinally. The lock is now in its completely lockedposition.

In the modified form of the invention illustrated in Fig. 14, a lock hasbeen disclosed which is provided with a'casing 90 for attachment upon adoor 91. This lock is used in conjunction with a keeper 92 attached uponthe doorjamb-93.. The casing 90 has its end adjacent the keeper 92closed except for openings 94 formed therein. The adjacent side of thekeeper is formed with corresponding openings 95 and in addition withlongi-. tudinal partitions 96 formed with openings 97. A plate 98is'slidably mounted within the easing 96 and is guided between the lugs99. A means is provided for moving this plate forwards or rearwards. Thedetails of this means is not disclosed since it is identical with themeans illustrated in the lock disclosed in Figs. 7-13 inclusive. Itshould be noted that this means includes the disc- 57 which is providedwith an eccentric pin member 58. Aresilient means should also beprovided in this look to hold this plate forwards or rearwards asdescribed in the previous form of the invention. A plate 100 ismounted.- for moving transversely within the casing 90. The transversemovement is limited by pins 101 projecting from the plate and working intransverse slots 102 within the casing 90. Bolt elements 103 projectfrom the plate and are in the form of hooks so as to be engageablewithin the openings 97. An inclined slot 104 is formed in the plate 100and is engaged by a pintle pin 105 projecting from the plate 98.

The operation of the lock may be understood by considering it in theposition shown in Fig. 14. This shows the lock in a partially closedposition. In the event of the disc 57 being rotated furthercounter-clock-wise the plate 98 will move so that the pin 105 rides inthe slot 104 and moves the hook portions of the bolts 103 completelyinto the lateral openings 97. This is the completely closed condition ofthe lock. The completely opened position of the lock would be the one inwhich the bolts 103 are completely retracted from the lateral openings97 obtained by turning the disc 57 clock-Wise. In the open position ofthe lock the door 91 may be withdrawn from the keep er 97. The door maybe of a sliding type so that when moved away from the jamb the bolts arecompletely withdrawn through the openings 95. The lock can also be usedon the swinging type of door, but in said case the keeper must haveopenings (not shown on the drawings) on the side to allow passage of thebolts when the latter are retracted from the apertures 97.

In the modified form'of the invention illustrated in Figs. 15-19inclusive, a lock has been shown which comprises a casing 105 forattachment upon a door in end contacting relation with a keeper 106. Theadjacent ends 107 and 108 of the casing and keeper respectively areformed with similar non-circular openings 109 through which bolts 110may pass. These bolts are provided with heads 111 adapted to beretracted into the opening in the end 107 or to be extended through theopening in the end 108 within the keeper 106 and then turned asindicated by the dot and dash lines in Fig. 19. The bolts 110 arerotatively mounted upon the carriage 112 and. have rear square heads113. The portions of the bolts extending through the carriage are formedwith teeth 114. A flat spring 115 acts against the heads 113 so as tohold the bolts against accidental turning. A transverse rack 116 is slidably mounted in the carriage 112 and meshes with the teeth 114.

The carriage 112 is partially surrounded by a plate 117 urged in onedirection by a spring 118 acting at the side of the casing 105. Thespring serves to hold the carriage in slidable relation against theother side of the casing. The plate 117 is formed with a slot 119 whichhas a straight portion connected with an inclined portion. A pin 120extends from the rack 116 into this slot. A resilient means is providedfor holding the plate 117 in a forward or rearward condition andcomprises a spring 121 coaxially mounted upon a lever 122 pivotallyconnected between the casing 105 and the plate. The spring serves tohold the plate end forwards as shown in Fig. 15 or rearwards as shown inFig. 16. In each of these conditions it is passing the dead center lineand therefore maintains it.

A means is provided for moving the plate to its forward or rear positionand comprises a stud 123 mounted or riveted upon the crank arm 124located within a recess 105' in the front wall of the casing 105 andfixed upon a knob rotative in the casing 105. The stud 123 carries arotative socket member 126 having a semi-circular arm 131 in onedirection the pin 129 moves thesocket 126 in an arc of 180, and the pin123 moves in a transverse slot 123 in the plate 117 to move the latterforwards. The rod 127 keeps the socket from turning relative to thecasing, but allows rotation relative to the pin 123 so that thesemi-circular collar 130 is always parallel to the side wall of thecasing. Upon further rotation of the arm 131 the pin 129 moves out fromthe semi-circular flange 130, leaving the plate 117 forwards, andallowing completion of a complete revolution to permit withdrawal of thekey from the cylinder look not shown on the drawings.

The operation of the lock may be traced by assuming it in the conditionshown in Figs. 15 and 17. To open the lock, the knob 125 or the tumblerlock stem 134 may be turned to cause moving of the plate 117 to its rearposition;' As this plate moves to the rear position, the slot 119 willcause the transverse motion of the rack 116. The end of the rack 135will move out from a recess 136 in the casing 105 so that the carriage112 is free to move rearwards. As the rack moves transversely, tht bolts110 will be rotated so that their heads are in line to pass through thesimilar openings in the end of the keeper. Further rearward motion ofthe plate 117 causes the end of the slot 119 to draw upon the peg 120and draw the carriage 112 rearwards. The bolts 110 being mounted on thecarriage, also move rearwards until they reach a position as shown inFig. 16 with their outer ends flush with the end of the lock.

The lock may be locked from its opened position shown in Fig. 16 byturning the knob, 125 or the tumbler lock stem 134 to cause theplate 117to move to its front position. Due to the frictional stress of the plate117 against the carriage 112, the carriage will simultaneously movetogether with the plate 117 as a single unit until the front of thecarriage abuts against the closed Thereafter merely the,

end of the lock casing. plate 117 will move forward and the slot 119acting in conjunction with the pin 120 will move the rack 135 laterallyuntil its end engages into the recess 136. that as the carriage 112moves towards theiront, the bolts 110 will become extended from theopenings in the end 107 of the casing. Furthermore" the bolts 110 willbe rotated when the rack 1 35 moves laterally to its position whereinits end engages within the recess 136.

While I have illustrated and described my invention with some degree ofparticularly, I realize that in practice various alterations therein maybe made. I therefore reserve the right and privilege of changing theform of the details of construction or otherwise alteringthe-arrangement of the correlated parts without departing from thespirit or the scope of the appended claims. r

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent is:-

1. In a lock, a casing for attachment on a door and having a closed endformed with non-circular Attention is called to the fact I openings foralignmentwith similar openings in a keeper for attachment upon a jamb inend contacting relation with the closed end of said cas ing, a plateslidable within said-casing, means for moving said plate forwards andrearwards, resilient means for holding'the plate in its forward or rearposition, bolts rotatively mounted on said plate and in the openings ofthe closed end of said casing, heads on said bolts of shapes similar tosaid openings and adapted, when extended, and turned, to assume lockedpositions within the keeper, a member pivotally mounted within saidcasing and having a rack of teeth engaging teeth formed in said boltsand also having a slot with a straight rear portion and an inclinedfront portion, and a pintle pin projecting from said plate and engagingwithin said slot.

2. In a lock, a casing for attachment on a door and having a closed endformed with non-circular openings for alignment with similar openings ina keeper for attachment upon a jamb in end contacting relation with theclosed end of said casing, a plate slidable within said casing, meansfor moving said plate forwards and rearwards, 25-

resilient means for holding the plate in its forward or rear position,bolts rotatively mounted on said plate and in the openings of the closedend of said casing, heads on said bolts of shapes similar to saidopeningsand adapted, when extended and turned, to assume lockedpositions within the keeper, a member pivotally mounted within saidcasing and having a rackof teeth engaging teeth formed in said bolts andalso having a slot with a straight rear portion, and an inclined frontpor- 35' tion, and a pintle pin projecting from said plate and engagingwithin said slot, and means for holding said bolts resiliently againstrotation.

3. In a look, a casing for attachment on a door and having a closed endformed with non-circular openings for alignment withsimilar openings ina keeper for attachment upon a jamb in end contacting relation with theclosed end of said casing, a plate slidable Within said casing, meansfor moving said plate forwards and rearwards, resilient means forholding the plate in its forward or rear position, bolts rotativelymounted on said plate and in the openings of the closed end of saidcasing, heads on said bolts of shapes similar to said openings andadapted, when extended and turned, to assume locked positions within thekeeper, a'member pivotally mounted within said casing and having a rackof teeth engaging teeth formed in said bolts and also having a slot witha I straight rear portion and an inclined front portion, and a pintlepin projecting from said plate and engaging within said slot, said meansfor moving the plate comprising a socket member engaging in a transverseslot formed in theplate, a disc eccentrically supporting said socketmember, and means for turning said disc.

4. In a look, a casing for attachment upon a door and having a closedend formed with noncircular openings for alignment with similar openingsin a keeper for attachment upon a jamb in end contacting relation withsaid casing, a plate slidable within said casing, means for moving saidplate, resilient means for holding the plate in a forward or a rearwardposition, a carriage slidable within said casing, bolts with teethformed at one end thereof and rotatively mounted upon said carriage andslidably engaged in the openings in the end of said casing, heads onsaid bolts of shapes to engage in said openings and upon extension andturning of said bolts to prohibit retraction, a rack transverselyslidably mounted in said carriage andmeshing with teeth on said bolts,and a pintle pin on said rack and engaging in a slot in said plate,'saidslot having an inclined portion;

5. In a look, a casing for attachment upon a door and having a closedend formed with noncircular openings for alignment with similar openingsin a keeper for attachment upon a jamb in end contacting relation withsaid casing, a plate slidable within said casing, means for moving saidplate, resilient means for holding the plate in a forward or a rearwardposition, a carriage slidable within said casing, bolts with teethformed at one end thereof and rotatively mount ed upon said carriage andslidably engaged in the openings in the end of said casing, heads onsaid bolts of shapes to engage in said openings, and upon extension andturning of said bolts to prohibit retraction, a rack transverselyslidably mounted in said carriage and meshing with teeth on said bolts,and a pintle pin on said rack and engaging in a slot in said plate, saidslot having an inclined portion, said plate partially extending aroundsaid carriage, and resilient means urging said plate and carriagelaterallyso that the carriage slidably engages against the sides of saidcasing.

6. In a lock, a casing for attachment upon a door and having a'closedend formed with noncircular openings, a keeper for attachment upon ajamb in end contacting relation with said casing, a plate slidablewithin said casing, means for moving said plate, resilient means forholding the plate in a forward or a rearward position, a carriageslidable within said casing, bolts with teeth formed in one end thereofand rotatively mounted upon said carriage and slidably engaged in theopenings in the end of said casing, heads on said bolts of shapes toengage in said openings and upon extension and turning of said i boltsto prohibit retraction for alignment with similar openings in a racktransversely slidably mounted in said carriage and meshing with saidteeth on said bolts, and a pintle pin on said rack and engaging in aslot in said plate, said slot having an inclined portion, said rackbeing engage able within a recessin said casing in the extended positionof said bolts.

7. In a'lock, a casing adapted to be attached to a door and having aclosed end formed with an opening, a 'member slidable within saidcasing, means for moving said member, a bolt rotatably mounted upon saidmember, said bolt beingadapted to pass through said opening forcombinedrotary and sliding motion, said bolt being formed at one of itsends with a fiat portion, spring means secured upon said member arrangedto register with said fiat portion of said bolt for keeping said boltagainst accidental rotation, and means mounted in said casing forrotating' said bolt.

8. In a look, a casing for attachment on a door and having a closed endformed with non-circular openings for alignment with similar openings ina keeper for attachment upon a jamb in end contacting relation with theclosed end of said casing, a plate slidable within said casing, meansfor moving said plate forwards and, rearwards, resilient means forholding the plate in its forward or rear position, bolts rotativelymounted on said plate and in the openings of the closed end of saidcasing, heads on said bolts of shapes similar to said openings andadapted, when extended and turned, to assume locked positions within thekeeper, a member pivotally mounted within said casing andhaving a rackof teeth engaging and longitudinally slidingly meshing with teeth formedin said bolts and also having a slot with a straight rear portion and aninclined front portion, and a pintle pin projecting from said plate andengaging within said slot, the rotative mounting of the bolts upon saidplate comprising a pair of blocks secured upon said plate and engagingneck portions formed upon said bolts.

9. In a look, a casing for attachment on a'door and having a closed endformed with non-circular openings for alignment with similar openings ina keeper for attachment upon a jamb in end contacting relation with theclosed end of said casing, a plate slidable within said casing, meansfor moving said plate forwards and rearwards, resilient mans for holdingthe plate in its forward or rear position, bolts rotatively mounted onsaid plate and in the openings of the closed end of said casing, headson said bolts of shapes similar to said openings and adapted, whenextended and turned, to assume locked positions within the keeper, amember laterally movably mounted within said casing and having atransverse rack of teeth engaging teeth formed in said bolts and alsohaving a slot with a straight rear portion and an inclined frontportion, and a pintle pin projecting from said plate and engaging withinsaid slot, the rotative mounting of the bolts upon said plate comprisinga pair of blocks secured upon said plate and engaging neck portionsformed upon said bolts, and means for holding said bolts in variousrotative positions.

10. In a look, a casing for attachment on a door and having a closed endformed with non-circular openings for alignment with similar openings ina keeper for attachment upon a jamb in end contacting relation with theclosed end of said casing, a plate longitudinally slidable within saidcasing, means for moving said plate forwards and rearwards, resilientmeans for holding the plate in its forward or rear position, boltsrotatively mounted on said plate and in the openings of the closed endof the casing, heads on said bolts of shapes similar to assume lockedpositions within the keeper, a member pivotally mounted within saidcasing and having a rack of teeth engaging teeth formed in said bolts,means for moving said member upon its pivot during a portion of themotion of said plate, the rotative mounting of the bolts upon said platecomprising a pair of blocks secured upon said plate and engaging neckportions formed upon said bolts, and means for holding said bolts invarious rotative positions, comprising a flat spring attached upon saidplate and having its ends resting upon square heads formed upon theinner ends of the said bolts.

11. In a look, a casing for attachment upon a door and having a closedend formed with noncircular openings a keeper for attachment upon a jambin end contacting relation with said casing,

a plate slidable within said casing, means for moving said plate,resilient means for holding the plate in a forward or a rearwardposition, a carriage slidable within said casing, bolts with teethformed in one end thereof and rotatively mounted upon said carriage andslidably engaged in the openings in the end of said casing, heads onsaid bolts of shapes to engage in said openings and upon extension andturning of said bolts to prohibit retraction, a rack transverselyslidably mounted in said carriage and meshing with said teeth on saidbolts, and a pintle pin on said rack ing an inclined portion, said rackbeing engageable within a recess in said casing in the extendedpositionof said bolts, and means for causing frictional connection and motion ofthe carriage and plate;

12. In a lock, a casing for attachment upon a door and having a closedend formed with noncircular openings a keeper for attachment upon a jambin end contacting relation with said casing, a plate slidable withinsaid casing, means for moving said plate, resilient means for holdingthe plate in a forward or a rearward position, a carriage slidablewithin said casing, bolts with teeth formed in one end thereof androtatively mounted upon said carriage and slidably engaged in theopenings in the end of said casing, heads on said bolts of shapes toengage in said openings and upon extension and turning of said bolts toprohibit retraction, a rack transversely slidably mounted in saidcarriage and meshing with said teeth on said bolts, and a pintle pin onsaid rack and engaging in a slot in said plate, and slot having aninclined portion, said rack being engageable within a recess in saidcasing in the extended position of said bolts, a spring acting betweensaid casing and plate and causing frictional connection between saidplate and carriage.

13. In a lock, the combination of a casing, a slidable and rotatablebolt therein, a plate in said casing movable in a direction lengthwiseof said bolt, means for causing said plate and bolt to move togetherthroughout a portion of the move-- ment of said plate, thereby to extendsaid bolt and adapted throughout a subsequent portion of the movement ofsaid plate to cause said bolt to rotate, an arm pivoted in the wall ofthe casing, a projecting stud on said arm extending through a transverseslot formed in said plate, a spring mounted in the casing and connectedto the plate and tending to hold said plate in forward and rearwardposition thereof, and means for manually turning said arm to move saidplate to operate the lock.

14. In a lock the combination with a casing, a plate slidable Withinsaid casing, resilient means connecting said plate and casing forholding said plate in forward or rearward position, a carriage slidinglymovable within the casing and being actuated by said plate, a boltrotatably mounted upon said carriage while said carriage is being movedin lengthwise direction along the casing by said plate, a knob rotatablymounted in the front wall of the casing for actuating the bolt, a crankarm connected to said knob, a socket member rotatably mounted on saidcrank, means for keeping said socket against rotary motion relative tothe casing while permitting rotary mo:- tion relative to said arm, andkey actuated means to operate the lock.

15. In a lock having a bolt, bolt extending and rotating devicescomprising a plate, a rotatable arm for moving said plate and a singlespring connecting the plate and easing adapted to operate said plate andholding the same in forward or rearward position, and operating saidrotatable arm for rotating the bolt into final locked position andremoving it into completely withdrawn position, and key operated meansto operate the lock.

16. In a lock the combination of a casing, a plate slidable within saidcasing, a carriage slidingly movable within said casing and beingactuated by said plate, a bolt carried by said carriage while beingmoved in lengthwise direction along the casing, a knob rotatably mountedin the front wall of the casing, a crank arm connected to said knob, asocket member rotatably mounted on said crank arm, a rod fixed to thesocket means to guide said rod thereby permitting said socket to have arotary motion relative said arm and non-rotary motion relative to thecasi ng a cover plate detachably secured to the easing, a second armrotatably mounted in the cover plate to actuate the socket member tooperate the lock, and key actuated means to rotate said arm.

17. In a lock the combination with a casing, a plate slidable withinsaid casing, a lever pivotally mounted in said casing andhaving acombined oscillatory and reciprocatory engagement with said plate,resilient means associated with said lever for holding said plate inforward or rearward position, a knob mounted in the front wall of thecasing for moving said plate, a bolt connected with said plate and beingactuated by the same for interlocking engagement with said keeper, andkey actuated means to operate the lock. c

18. In a lock having a bolt, a bolt extending and rotating meanscomprising a plate having a connection with said bolt for causing therotation of said bolt, an oscillating arm for moving said plate, aspring connecting said plate and casing and adapted to move the boltinto completely locked and unlocked position, and a knob rotatablymounted in the front wall of the casing to operate said bolt.

JOHN HOLTZMAN.

